A joik (also spelled yoik), luohti, vuolle, leu'dd, or juoiggus is a traditional Sami form of song. Originally, joik referred to only one of several Sami singing styles, but in English the word is often used to refer to all types of traditional Sami singing. According to music researchers, joik is one of the longest living music traditions in Europe, and is the folk music of the Sami people.